Best practice in gifted and talented identification procedures involves making decisions on the basis of multiple measures. However, very little research has investigated the impact of different methods of combining multiple measures. This article examines the consequences of the conjunctive ("and"), disjunctive/complementary…

In 1994 the State Collaborative on Assessment and Student Standards of the Council of Chief State School Officers began a study to examine the generalizability of performance-based assessments (PBAs) for state-mandated assessment programs. The intent was to examine the major sources of error associated with PBAs and the generalizability and…

A procedure is described for estimating the reliability and conditional standard errors of measurement of scale scores incorporating the discrete transformation of raw scores to scale scores. The method is illustrated using a strong true score model, and practical applications are described. (SLD)

This study provides empirical evidence about the sampling variability and generalizability (reliability) of a statewide performance assessment for grade six. Results for 600 students at individual and school levels indicate that task-sampling variability was the major source of measurement error. Rater-sampling variability was negligible. (SLD)

Studied the amount of measurement error in a state's performance-based writing task as it relates to high-stakes decision reproducibility. Using 175 eighth-grade writing samples, the study finds moderate correlations between the two raters' scores, with significant differences for the rates for the handwritten, but not the typed, essays.(SLD)